Paper-feeding machine.



' No. 628,132. Patented July 4, I899.

' W. G. TREVETTE.

PAPER FEEDING MACHINE.

(Application filed. Jan. 5, 1898.) I

(No Model.) 7 Sheets$heet l.

zgf/wsw v V My) M4 %%VWZ4 9 W THE NORR 5 PETERS CO PHDTC ITNQ WASHNGTQN D C N0. 628,!32. Patented July 4, I899. w. e. TREVETTE.

PAPER FEEDING MACHINE.

(Application filed Jan. 5, 1898.)

l (Wu unzm E n la \l !i l lllllili (m (L j i @W No. 628,I32. Patentd July 4;4899.

- w. G. TREVETTE.

PAPER FEEDING MACHINE.

A laion fil J pp 10 t ed an. 5, 1898.) (No Model) I 7 hhhhhhhhhh 6t 3 an Q HE NORRIS PETERS CO PHOTO-LITHCL. WASHINGTON, Dv C. I

. No. 628,132. Patented July 4, I899.

w. a. TREVETTE.

PAPER FEEDING MACHINE.

(Application filed. Jami, 189B.)

7 Sheets-Sheet 4,

(No Model.)

. QMEEE W No. 628,!32. Y Patented July 4, I899.

' W. G. TREVETTE.

PAPER FEEDING MACHINE.

(Application filed Jan. 5., 1898.)

7 Sheets-Sheet 5.

(No Model.)

Lmwmmm A\ H m. V

N0. 628,l32. Patented July 4, I899. W. 6.. TREVETTE.

PAPER FEEDING MACHINE.

' (Application filed Jan. 6, 1898.)

(No Model.) 7 7 SheetsSheet 6,

llll "M II Hui-"HUM", f;mnunlmmnnlll 9 N0. 628,l32. Patented July 4, I899.

W. 6.. TREVETTE.

PAPER FEEDING IIACH INE.

(Application filed Jan. 5, 1898;) '(No Modelfl I 7 Sheets-Sheet 7.

great nu mber of times.

UNITED STATES] PATENT OFFICE.

\VENTWORTH G. TREVETTE, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE- HALF TO LUCIUS ll". VVINCl-IESTER, OF SAME PLACE.

PAPER-FEEDING MACHINE.

SPECIFICATION forming part 01' Letters IlPatent NO. 628,132, dated July 4, 1899. Application filed January 5, 1898. Serial. No. 6651659. (No model.)

To all whom it may concern.-

Be it known that I, W NT O TH G. Tan

Much difficulty has been experienced with paper-feedin g machines by reason of the feed ing of two or more sheets of paper during a single cycle of operation of the machine. This is due largely to the apparent impossibility of adjusting the feeding mechanism for a continuous run, so that it will feed'only a single sheet of paper under all conditions, which vary greatly, owing to differences in the character and quality of the paper, to friction between the sheets, to unevenness of the pile, and to many other causes which tend to make the sheets of paper stick tightly together and prevent the easy separation of the top sheet from the others. The top sheet on a pile several feet in height of printed sheets of large area will not lie level in a horizontal plane; but it is a matter of common knowledge that such a pile will be higher at some parts than at others, owing to the impressions and indentations of the type on each sheet, which, while insignificant on each sheet, make a considerable difference when multiplied a It is now the practice in some instances to insertwedges in the pile of paper to bring the top of the pile to a level, these wedges being inserted or removed, as occasion requires, in order that the top sheet of paper may always be in a level position to facilitate the feeding of but a single sheet from the pile. a

The primary object of the present invention is to provide a paper-feeding machine which will feed only a single sheet of paper from a pile during each cycle of operation thereof.

Another object of the invention is to provide means for insuring the feeding of but a single sheet of paper from a pile and which will be adjusted automatically to the position of the top of the pile and operate always the same whether the top sheet lies'in a horizontal plane or not.

A further object of the invention is to pro vide a reciprocating buckler having a contacting face movable at an angle to the line of its reciprocation and means for temporarily supporting the buckler during each cycle of operation thereof.

These and such other objects as hereinafter appear are attained by the devices illustrated in the accompanying drawings, forming part of this application and illustrating the preferred embodiment of my invention, in wh-ich I Figure 1 is a side elevation of a paper-feeding machine, showing my invention applied thereto. Fig. 2 isa side view of the cam mechanism employed for actuating the several devices. Fig. 3 is a side elevation of the huekling mechanism, partly in section, showing the same just before the buckler has reached the top sheet. Fig. 4 is a similar view showing the buckler after it, has commenced to buckle the top sheet. Fig. 5 is also a similar View showing the paper buckled. .Fig. 6 is a top plan view of the buckling mechanism. Fig. 7 is a detail sectional view of one end of the buckling mechanism, showing particularly the device for lifting the buckler from the paper. Fig. 8 is a detail view of the end plate carried by the arm which communicates the reciprocating movement to the buckler.

Fig. 9 is a detail view of the guide-plate for the lifting mechanism. Fig. 10 is a detail view of the stopping-pawl. Fig. 11 is a sectionalview on the line 11 11 of Fig. 4. Fig. 12 is a sectional view, and Fig. 13 is a side view, of the buckler. Fig. 14 is a rear View of two bucklers, showing the positions of the same when operating on a pile of paper which varies in height. Figs. 15 to 19, inclusive, are diagram views showing the four different positions of the buckler and its actuating devices during a single cycle of operation of the machine. 7 r 4 Referring to the drawings, in which like letters and numerals of reference denote correspondin g parts in all the figures, A designates the frame of a paper-feeding machine; a, the tie-rods, and B a main shaft,which isjournaled in hearings in the frame and provided with a grooved cam 19 to actuate a rod 1), pivotally connected to an arm I), rigidly secured on a rock-shaft O. This rock-shaft may be employedfor the purpose ofactuating the feeding devices of some approved construction, and it is from this rock-shaft that the proper movementisimparted to the buckling devices hereinafter described in this particular embodiment of my invention. It will be understood, however, that it is not by any means necessary or essential that the buckling devices should be connected directly or indirectly with the feeding devices or actuated from the same rock-shaft, for it is obvious that these parts may be separately actuated, the only requirement being that the buckling devices and the feeding devices should operate on the paper intermittently and successively. The invention is therefore not limited to a feeding-machine of any special construction or to any particular feeding devices, for it may be adapted for use in connection with any feeding-machine and with any kind of feeding devices by the exercise of simple mechanical skill to secure the parts in place.

Referring particularly to Figs. 1 and 2, I have indicated a supporting-bar D for the feeding devices, and in the machine illustrated this bar is carried by vertically-movable eccentric arms d on each side of the machine and provided with lugs (1, arranged on the eccentrics d, carried by the eccentric rock-shaft c. A roll a is carried by a shaft 0, which is actuated through gear connections with the main power-shaft, as shown in Fig. 1, and it operates in conjunction with other devices, which it is unnecessary to describe in view of their well-known character, to deliver a sheet of paper from the machine. The bar D is sufficient to indicate the relation of the feeding devices to the buckling mechanism.

I have found it desirable in most instances to employ two bucklers on each feeding-machine, and although any number may be employed it will only be necessary to describe one particularly. The drawings illustrate only so much of a simple form of feeding-machine as seems to be necessary for a proper understanding of the invention.

A bracket E is rigidly secured on a tie-rod a in the upper part of the machine, and it carries the supporting-rods e. The rear ends of these supporting-rods carry a casting forming a head or support F, which is provided with a central cavity E, as shown in Fig. 7, and a guide-plate f, said plate being rigidly secured to the front of the head and provided with an openingf and a wallf, as shown in Fig. 9, for a purpose hereinafter fully described.

A cross-head G is adapted to be reciprocated back and forth on the supporting-rods e, and it is actuated by a cam-foot g, carried by the rock-shaft O, which engages a roller g,

secured to the cross-head. A rod II is adjustably secured to said cross-head by a thumbscrew II, and it carries a plate It on its forward end, Figs. 6 and 8, said plate being provided with a slot h and guided onthe lifting rock-shaft I, journaled in suitable bearings in the head, Fig. 7. A lifting frame J is guided in its vertical movement on the plate f, and it is provided with forwardly-extending sides j, having grooves therein to receive the guideplate, as shown in Fig. 6. A shaft K is journaled in bearings in the lugs 70, extending rearwardly from the lifting frame, and it carries on one. end an actuating-lever L, to the lower end of which the arm-lever Z is pivotally secured. On the other end of this shaft K is a short arm M, the lower end of said arm being provided with a roller 'm, which is arranged to operate against a shoulder m on the plate h, carried by the reciprocating rod II, so that the shaft K will be rocked in its bearings as the rod H is reciproeated under the influence of the cam g, which pushes the crosshead and rod forward, and the spiral spring on said shaft K, which returns the rod and cross-head to their original rearward position. It will thus be observed that the rock-shaft K, with its actuating-lever L and arm-lever Z, constitute in effect a bell-crank actuating-lever, which is operated by the cam g and spring 70 to communicate the desired reciprocating movement to the buckler.

A bell-crank lever N is pivotally secured on the bracket E, and one arm n of said lever is adapted to be engaged by the cross-bar D, while the other arm 02 carries a bracket 0, to which a rod 0 is rigidly secured. The forward end of this engaging rod is adj ustably secured by a set-screw o to one arm 19 of a bell-crank lever P, rigid on the lifting rockshaft I. This bell-crank lever operates in the cavity E of the head, and its other arm 13 carries a pawl Q, which is arranged to project through the opening f in the guide-plate to engage a rack q, secured to the face of the lifting frame J, said pawl being controlled by a spring q, secured to its lower end and which bears against the lower portion of the guide-plate to hold the pawl in position to enter the opening f and engage the rack. \Vhen the cross-bar D engages the bell-crank lever N in its downward movement, it operates to draw the connecting-rod 0 forward and disengage the pawl Q from the rack, and a spring R on the lifting rock-shaft is of sulficient strength to return these parts to their original position when the crossbar releases the bell-crank N, thereby allowing the pawl to again engage the rack and lift the frame. As before stated, other means and devices may be employed to actuate these parts of the mechanism, and it must be understood that the cross-bar D is shown simply to indicate how the parts may be actuated and at what time with relation to the operation ofthe feeding devices.

A gravity presscr-foot S is arranged to rest at all times upon the pile of paper, and it is provided with a stem 5, which operates in a groove or recess in one side of the liftingframe, being held in place by a plate 3 and having a lug s" on its upper end to engage the upper edge of said plate to prevent the foot and stem from becoming disengaged from the lifting-frame whenever the foot does not find a rest upon the pile of paper or elsewhere.

The arm-lever Z projects forward and carries a buckler on its forward end, which is arranged to engage the pile of paper in advance of the presser-foot and has a contacting face movable at an angle to theline of recip-.

rocation of said arm-lever. This buckler constitutes a very important part of my invention, and in the particular form illustrated in Figs. 12 and 13, which is capable of considerable modification, it consists of a roller mounted loosely on a spindle T, rigidly secured in the forward end of the buckler-arm, and this roller comprises in the preferred form illustrated in the drawings a coret and a contacting face if, of rubber or other suitable material. I do not limit myself, however, to this particular construction of the buckler, for it will be readily understood that while I prefer a buckler of substantially the construction illustrated many changes may be made in its form without departing from my inventionas, for instance, the roller may be made entirely of rubber and the core omitted, or a contacting face of some other material suitable for the purpose may be employed instead of rubber,or some device other than a roller may be employed to operate in the same way toproduce the same result.

By mounting the buckler-roller loosely on the end of the arm-lever it will be observed that said roller is capable of rotating in a plane at an angle to the bodily movement of the arm-lever and its actuating mechanism, and the purpose of this peculiar construction and arrangement of parts will be pointed out later on in the description of the operation.

The presser-foot is provided with a fulcrumrest in the form of a roller U, mounted on one side thereofand beneath the arm-lever, so that'when the buckling operation is completed and the mechanism is actuated to return the buckler to its initial position the armlever will rest upon and slide on said roller U, thereby holding the buckler out of contact with the pile of paper.

The parts and devices hereinbefore referred to as employed by me for the purpose of communicating the proper movements to the buckler are not by any means arbitrary or the only ones which can be employed, and they have been shown and described here for the purpose of showing a simple, effective, and complete adaptation of the broad invention, which is not by any means limited to the particular mechanism and devices for actuating the buckler. The reciprocatory movement may be imparted to the buckler from the rock-shaft O or from some other part wholly independent of this shaft. Again, devices for lifting the frame may be actuated by the parts associated with the feeding devices, or they may be actuated entirely independent of the feeding devices so long as they operate in the proper manner with relation thereto. It is of course obvious to those skilled in the art that many other changes in the form and proportion of parts and details of construction and arrangement of combination of devices may be made without departing from the broad invention, and I therefore reserve the right to make all such changes as fairly fall within the spirit and scope of the invention.

This being the general construction of my invention, I will now proceed to describe the operation thereof.

It is understood, of course, that the buckling operation and the feeding operation are intermittent and successivethat is to say, the top sheet of paper on the pile V, which is carried by the table 12, is firstbuckled and then fed, the buckling devices operating at the rear end of the pile, while the feeding devices operate at the forward end of the pile. However, my invention, as before stated, is not in any wise limited to an association with any particular feeding mechanism or to any connections between the feeding mechanism and thebuckling mechanism. When the rockshaft 0 is operated,the' cam-foot g forces the cross-head forward and carries the rod H and its end plate along with it, the end plate engaging the roller m on the arm M and rocking the shaft K, thus carrying forward the actuating-arm L and the arm-lever l, which slides down over the fulcrum-rest U on the presser-foot until the buckler engages the top sheet of paper, whereupon in its continued forward movement the buckler operates to buckle the top sheet of paper in the manner illustrated in Fig. 5. Thereafter the buckler is lifted from contact with the paper and carried back to its rearward position while the top sheet is being fed from the machine. In Fig. 3 the buckler is shown just before its initial position, the cross-bar D being in its lowest position, to indicate that the feeding devices have just about completed their forward movement to feed the previouslybuckled top sheet of paper from the pile, and the weight of the buckler and its associated parts is carriediby the presser-foot, which is resting upon the pile of paper to prevent the sheets beneath the top sheet from being moved. At this time the pawl Q is disengaged from the rack and rests against the wall f; but immediately after the sheet has been fed from the machine the feeding devices are raised out of contact with the pile and the cross-bar D is brought to an elevated position. As the bell-crank lever N is released from the pressure of the cross-bar D the spring R on the lifting rock-shaft returns that shaft to its initial position and raises the pawl Q, which enters the opening f in the guide-plate and engages the rack and lifts the frame J and the parts carried thereby from the presser-foot into the position shown in Figs. 1 and 5. At the same time the rockshaft 0 rocks forward and causes the camfoot 9 to push the cross-head forward, thereby carrying the rod II and its end plate into an advanced position and rocking the shaft K to project the arm-lever and buckler forward, whereupon the buckler moves forward and downward into contact with the top sheet of paper and pushes the rear portion of said top sheet forward from beneath the presserfoot and buckles the same, as shown in Fig. 5. The buckling of the top sheet having thus been completed, the feeding devices descend into contact with the paper, and the cross-bar is again brought into its lowest position, at which time the pawl Q is disengaged from the rack by being lowered and passing over the wall f to transfer the weight of the liftingframe and its connected parts from said pawl to the presser-foot, and thereafter the huekler is lifted out of contact with the paper by the operation of the cam 7 and spring 7.1, as before described.

I have assumed in the foregoing description that the feeding devices, as represented by the cross-bar D, have a vertical movement, as well as a horizontal movement, and that the bell-crank lever N is operated during the vertical movements of the feeding devices by suitable connections therewith; but the bellcrauk lever may be operated at the proper time and in the proper manner by other connections and irrespective of any particular movement of the feeding devices, which may be ordinary feedrollers, if desired.

WVhile the paper is being fed from the pile by the feeding devices the pawl Q is disengaged from the rack, Fig. 3, and the weight of the lifting-frame and the parts carried thereby is carried by the presser-foot, which is resting upon the paper. The greatest pressure or weight of the presser-foot is therefore on the pile of paper beneath the top sheet and behind the buckled rear end portion of the top sheet, so that during the feeding operation there is sufficient weight and pressure upon the pile of paper beneath the top sheet to prevent more than the single sheet being fed from the machine during one operation. When the feeding operation is completed, the spring R rocks the lifting rock-shaft backward and carries the pawl Q from the position shown in Fig. 3, where it is disengaged from the rack and resting against the wallf, to the position shown in Fig. 4, where it has entered the openingf in the guide-plate and engaged the rack and lifted the frame J. The weight of the lifting-frame is thereby transferred from the presser-foot to the pawl, so that the buckler in its forward movement may easily draw the rear edge of the top sheet of paper from beneath the presser-foot.

In order that the operation and movements of the buckler and its associated parts may be understood more clearly and readily, I have illustrated the four important positions thereof in Figs. 15 to 18, inclusive, and the travel of the buckler in Fig. 19.

Fig. 15 shows the first position of the buc= kler, which is in contact with the top sheet of paper and prepared to move forward and buckle the top sheet. At this time the feed ing devices have fed the top sheet of paper from the pile, or, at least, the feeding operation has operated to such an extent that the present operation of the buckler will have no effect upon the feeding of the previouslybuckled top sheet. The weight of the liftingframe and its associated parts has been lifted from the presser-foot and is carried by the pawl Q, and the presser-foot itself is now resting lightly upon the top sheet. The buckler is now moved forward, as indicated by the dotted line in Fig. 15, to the position shown in Fig. 16 in a substantiallyhorizontal direction,'and it buckles the top sheet, drawing the rear end of said sheet from beneath the presser-foot. At this time the feeding devices are brought into contact with the top sheet of paper for the purpose of feeding the same from the pile, and the pawl Q is withdrawn from engagement with the rack on the lifting-frame, and said frame drops upon the shoulder 20 of the presser-foot, thereby adding to the weight of the presser-foot for the purpose of holding the under sheets in a stationary position. As the lifting-frame drops upon the presser-foot it carries with it, of course, the actuating-leverand the arm-lever, and the latter engages the roller U on the presser-foot in such a manner as to lift the buckleron the forward end of said arm-leverout of contact with the top sheet, as shown in Fig. 17. This movement of the buckler is indicated by the dotted line in Fig. 16. The feeding devices now feed the sheet of paper from the pile and at the same time the rock-shaft O rocks upward to permit the spring 75 to return the cross-head to its rearward position, rocking the shaft K and drawing the armlever and the buckler to their rearward position in the manner indicated by the dotted line in Fig. 17 and as shown in Fig. 18. The spring R is then permitted to rock the shaft I and raise the pawl Q, which lifts the frame Jand causes the arm-lever to move on the fulcrumrest, so as to move the buckler in the direction indicated by the dotted line in Fig. 18 and into its initial position in engagement with the pile of paper. The arm N is also provided with an upward extension 21, which is adapted to engage the lifting-frame J, so as to limit the rearward movement of the armlever and buckler.

I have stated that it is desirableto employ two bucklers, each of which is operated in the manner hereinbefore described, and two bucklers are practically necessary where the sheets of paper are of large size and are desirable in all cases. The two bucklers are arranged to operate near to the side edges of the sheet of paper, and as the sheets are held together by frictional contact to such an extent that the feeding of a single sheet from the pile is a matter of great difficulty with the old machines it is a fact, also, that if the rear corners of the top sheet are buckled the center of the sheet between these corners would ordinarily not be buckled, but remain in close contact with the second sheet-that is to say, the center of the top sheet would generally not be carried forward with the corners under the influence of the advancing movement of the bucklers, and there is liathe sheet at the center, although this may result in some cases; but the usual operation of the bucklers is to buckle the sheet only at the rear corners, and by reason of their capability of rotating in a plane at an angle to the line of their reciprocation the sheet is released from any excessive sidewise tension.

Another important feature of my invention is the automatic vertical adjustment of the buckler and its associated parts, whereby two bucklers may operate on a single pile of paper which varies in height and without requiring any special care or adjustment.

The pile of printed paper, which may be several feet high, will vary greatly in height owing to the characterof the impressions upon the paper and to other conditions which are familiar to those skilled in the art. In Fig. 14 I have shown how a pile of printed paper may vary in height and the position of the two bucklers whenoperating thereon. It will be understood, of course, that each buckler operates independently of the other; but they both operate at the same time, and the vertical adjustment of the buckler to provide for the Variations in the height of the pile is automatic. The pawl Q permits the liftingframe to drop into such a posit-ion that the buckler and presser-foot will properly engage the pile, and thereafter each pawl lifts its frame a sufficient distance to provide for the subsequent operations.

Thepile of paper of course is automatically raised by the well-known means connected with the table 1/ as the paper is fed from the machine, and it will not be necessary to describe these means in detail, as they form no part of the present invention.

A stop-pawl W is rigidly secured on the lifting rock-shaft I, and it is normally arranged in rear of, so as to engage, a projection to on the end plate 7t of the rod H, Fig. 8. While the lifting-frame is in its elevated position, the pawl is located immediately behind the stop W and will prevent the rearward movement of the rod H to vibrate the rock-shaft K in the event that the devices are dropped or otherwise prevented from feeding a sheet; but when the feeding devices operate the bell-crank lever N or said lever is otherwise operated to impart a rocking movement to the shaft I the pawl is lifted out of the path of the projection 21; and the rod H is permitted to contin ue its rearward movement. Vhenever the rock-shaft I fails to operate, this pawl will prevent the spring 7c from moving the rod H to its rearward position by engaging the projection to; but when the rockshaft I is operated the pawl is lifted and the rod H may proceed to the limit of its movement.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a paper-feeding machine, a reciprocating rotary buckler capable of rotating in a plane at a right angle to the line of its rec'iprocation, substantially as described.

2. In a paper-feeding machine, the combination with a reciprocating vertically-swinging arm pivoted at a right angle to its line of reciprocation, of a rotary buckler mounted in the free end of said arm and capable of rotating in a plane at right angles to the pivot thereof, substantially as described.

3. In a paper-feeding machine, the combination with a presser-foot, of a reciprocating buckler capable of rotating in a plane at a right angle to the line of its reciprocation and means for raising the buckler from the paper upon completing its forward or buckling movement and for supporting said buckler upon the presser-foot during its backward movement, substantially as described.

4. In a paper-feeding machine, the combination with a presser-foot, of a rotary buckler capable of rotating in a plane at a right angle to the line of its reciprocation and means for supporting the buckler upon the presserfoot during its backward movement, substantially as described.

5, In a paper-feeding machine, the combination with the feeding devices and a presserfoot, of a reciprocating buckler capable of rotating in a plane at a right angle to the line of its reciprocation constructedand arranged to rest upon the pile of paper during the buckling or forward movement and to rest upon the presser-foot during the feeding operation, substantially described.

6. In a paper-feeding machine, the combination with the feeding devices and a presserfoot, of a reciprocating buckler having a contacting face movable at a right angle to the line of its reciprocation, said buckler being constructed and arranged to rest upon the pile of paper during the buckling or forward movement and to rest upon the presser-foot during rco the feeding operation and throughout the backward movement of said buckler, substantially as described.

7. In a paper-feeding machine, the combination with the feeding devices and a presserfoot, of a reciprocating rotary buckler capable of rotating in a plane at a right angle to the line of its reciprocation, said buckler being constructed and arranged to rest upon the pile of paper'during the buckling or forward movement and to rest upon the presser-foot during the feeding operation and throughout the backward movementof said buckler, substantially as described 8. In a paper-feeding machine, the combination with a reciprocating buckler normally resting upon the pile of paper, of a gravity presser-foot normally resting upon said pile, and means for transferring the weight of the buckler to the foot during the feeding operation and throughout the backward movement of said buckler, substantially as described.

- 9. In a paper-feeding machine, the combination with a buckler and its arm, of a lever connecting with and operating said arm, means for imparting a bodily and pivotal movement to said lever and a rest for the arm between said lever and the buckler, substantially as described.

10. In a paper-feeding machine, the combination with a buckler, its arm and a presserfoot, of a lever connecting with and operating said arm, means for imparting a bodily and pivotal movement to said lever, and a rest for the arm on the presser-foot between said lever and the buckler, substantially as described.

11. In a paper-feeding machine, the combination with a gravity presser-foot, of a vertically-movable and automatically-adjustable frame constitutinga guide thereforand means for temporarily transferring the weight of the frame to said foot, during the feeding operation, substantially as described.

12. In a paper-feeding machine, the combination with a gravity presser-foot, a reciprocating buckler and a vertically-movable frame constituting a guide for said foot, of means for temporarilytransferring the weight of the buckler and frame to said foot during the feeding operation, substantially as described.

13. In a paper-feedingmachine, the combination with a gravity presser-foot, a verticallymovable frame constituting a guide therefor and a reciprocating buckler, of a support for said buckler and means for temporarily transferring the weight of the buckler and frame to said foot during the feeding op-" eration, substantially as described.

14. In a paper-feeding machine, the combination with a gravity presser-foot, of a reciprocating buckler, a vertically-movable frame constituting a guide for said foot and connectcd with, so as to operate, said buckler and means for temporarily transferring the weight of the frame and bucklerto said foot, substantially as described.

15. In a paper-feeding machine, the combination with a gravity presscr-foot, of a reciprocating buckler, a vertically-movable frame constituting a guide for said foot, a vibrating lever pivoted to said frame and connected with, so as to operate, said buckler, and means for vibrating the lever so as to reciprocate the buckler, substantially as described.

16. In a paper-feeding machine, the combination with a gravitypresser-foot, of a reciprocating buckler, a vertically-movable frame constituting a guide for said foot, a vibrating lever pivoted to said frame and connected with, so as to operate, said buckler, means for vibrating the lever and moving the frame so as to reciprocate the buckler, and means for temporarily transferring the weight of the frame and buckler to said foot, substantially as described.

17. In a paper-feeding machine, the combination with a gravity presser-foot, of a vertically movable frame constituting a guide therefor, a bell-crank lever carried by said frame, an arm-lever connected to said bellcrank lever and carrying a buckler and means for vibrating the lever and moving the frame so as to reciprocate the buckler, substantially as described.

18. In a paper-feeding machine, the combination with a gravity presser-foot, of a vertically-movable gravity-frame constituting a guide therefor and means for automatically adjusting and intermittently raising the frame and permitting the same to drop to rest upon said presser-foot, substantially as described.

19. In a paper-feeding machine, the combination with a gravity presser-foot, of a reciprocating buckler, a vertically-movable frame constituting a guide for said foot, a bell-crank -lever pivoted to said frame and connected with, so as to operate, said buckler and means for temporarily holding said framein an elevated position, substantially as described.

20. In a paper-feeding machine, the combination with a gravity presser-foot, of a Vertically movable frame constituting a guide therefor and a pawl-and-ratchet mechanism operating to transfer the weight of said frame to the presser-foot during the feeding operation, substantially as described.

21. In a paper-feeding machine, the combination with a gravity presser-foot, of a vertically movable frame constituting a guide therefor, a reciprocating buckler, a lever carried by the frame and connected with, so as to operate, said buckler, and a pawl-andratchet mechanism for automatically and intermittently raising the frame and permitting the same to drop and rest upon the presserfoot, substantially as described.

22. In a paper-feeding machine, the combination with a gravity resser-foot, of aguideplate, a vertically-movable frame operating on said plate and constituting a guide for said foot, a rack on said frame and a pawl operating through an opening in the plate to engage said rack, substantially as and for the purpose described.

23. In a paper-feedin g machine, the combination with a support, a gravity presser-foot and a reciprocating buckler, of a vertically movable frame guided on said support and constituting a guide for said foot, and a pawland-ratchet connection between said support and said frame, substantially as and for the purpose described.

24. In a paper-feeding machine, the combination with a support, a gravity presser-foot, and a reciprocating buckler, of a guide-plate carried by the support, a vertically-movable frame operating on said plate and a pawl-andratchet connection between said support and frame, subs antially as and for the purpose described.

25. In a paper-feeding machine, the combination with a support, a gravity presser-foot and a reciprocating buckler, of a guide-plate fixed on said support and provided with an opening therein and a Wall beneath the opening, a frame guided on said plate, a rack on said frame and a pawl adapted to be automatically operated to enter the opening in the guide-plate to engage the rack and lift the frame, or lowered to strike the wall and be disengaged from the rack, substantially as and for the purpose described.

I 26. In a paper-feeding machine, the combination with a support,a gravity presser-foot and a reciprocating buckler, of a guide-plate fixed to the support and provided with an opening therein, a lifting-frame guided on said plate and constituting a guide for said foot, a rack carried by said frame, 'a vibrating lever pivoted to said frame and connected with, so as to operate, said buckler, a bellcrank lever pivotally mounted on the support, a pawl carried by said bell-crank lever and adapted to operate through the opening in the guide-plate to engage the rack .and means for automatically operating said pawl to lift the frame and permit the same to drop upon the presser-foot intermittently, substantially as and for the purpose described.

27. In a paper-feeding machine, the combination with feeding devices, a support, a gravity presser-foot and a reciprocating buckler, of a guide-plate fixed to the support and provided with an opening therein, a verticallymovable lifting-frame guided on said plate and constituting a guide for said foot, a rack carried by said frame, a vibrating lever pivoted to said frame and connected with, so as to operate, said buckler, a bell-crank lever pivotally mounted on the support, a pawl carried by said lever and adapted to operate through the opening in the guide-plate to engage the rack and means adapted to be operated by the feeding devices forvibrating said bell-crank lever, substantially as described.

28. In a paper-feeding machine, the combination with feeding devices, a support, agravity presser-foot. and a reciprocating buckler, of a guide-plate fixed to the support, aliftingframe guided on said support and constituting a guide for said foot, a rack carried by said frame, a vibrating lever pivoted to said frame and adapted to operate the buckler, a bell-crank lever mounted on the support, a pawl carried by one arm of said bell-crank lever and adapted to operate through an opening in the guide-plate to engage the rack on the frame, a rod connected to the other arm of said bell-crank lever and connections between the feeding devices and said rod for automatically reciprocating the rod, substantially as and for the purpose described.

29. In a paper-feeding machine, the combi nation with a support, a gravity presser-foot and a reciprocating buckler, of a verticallymovable lifting-frame constituting a guide for said foot, a vibrating lever pivoted to said frame and connected with, so as to operate, said buckler, a rock-shaft and connections between said rock-shaft and said lever for automatically vibrating the lever, substantially as described.

30. In a paper-feeding machine, the combination with a support, a gravity presser-foot and a reciprocating buckler, of a verticallymovable lifting-frame constituting a guide for said foot, a vibrating lever pivoted to said frame and connected with, so as to operate, said buckler, a rock -shaft, a cross -head, a cam foot carried by said rock shaft and adapted to engage the cross-head and a connection between said cross-head and the lever to vibrate the lever, substantially as described.

31. In a paper-feeding machine, the combination With a support, a gravity presser-foot and a reciprocating buckler, of a verticallymovable lifting-frame constituting a guide for said foot, a vibrating lever pivoted to said frame and connected with, so as to operate, said buckler, a rock-shaft, a cross-head, a cam-foot carried by the rock-shaft and adapted to engage the cross-head, a connection between said cross-head and said lever for vibrating the lever, and a spring on said lever to coact with said rock-shaft to reciprocate the buckler, substantially as described.

32. In a paper-feeding machine, the combination with a support, a gravity presser-foot and a reciprocating buckler, of a verticallymovable lifting-frame constituting a guide for said foot, a vibrating lever pivoted to said frame and connected with, so as to-operate, said buckler, a rock-shaft, connections between the rock-shaft and the lever to vibrate the lever, a bell-crank lever pivotally mounted on the support, a pawl-and-ratchet connection between said lever and the lifting-frame, a rod connected to said bell-crank lever, a bell-crank lever connected to the other end of said rod and means for actuating the same to lower the pawl, and a spring for returning the pawl to its elevated position, substantially as described.

33. In a paper-feeding machine, the combination with a supp ort, a gravity presser-foot and a reciprocating buckler, of a vertically movable lifting-frame constituting a guide for said foot, a rock-shaft pivotally mounted in said frame, an actuating-lever secured to said shaft, an arm-lever pivoted to the actuating-lever at one end and carrying the buckler on its other end, means for vibrating said rock-shaft and ahook on the rear end of said arm-lever to engage the actuating-lever, substantially as and for the purpose described.

34. In a paper-feeding machine, the combination with a support, a gravity presser-foot and a reciprocating buckler, of a verticallymovable lifting-frame constituting a guide for said foot, a rock-shaft pivotally mounted in said frame, an actuating-lever secured to said shaft, an arm-lever pivoted to the actuating-lever at one end and carrying the buckler on its other end, means for vibrating said rock-shaft, an arm secured on said shaft, and an upward extension on said arm adapted to engage the lifting-frame, substantially as and for the purpose described.

35. I11 a paper-feeding machine, the combination with a gravity presser-foot whose position is controlled by that of the pile operated upon, of a vertically-movable frame and means for reciprocating said frame between difiering planes determined by the position of the presser-foot, substantially as described.

36. In a paper-feeding machine, the combination with a fixed support and a verticallymovable gravity presser-foot whose position is controlled by that of the pile operated upon, of a vertically-movable frame constituting a guide for said foot and means for reciprocating said frame between differing planes determined by the position of the presser-foot, substantially as described.

37. In a paper-feeding machine, the combination with a gravity presser-foot whose position is controlled by that of the pile operated upon, of a Vertically-movable frame, means for transferring the weight of the frame to the foot during the feeding operation and means for reciprocating said frame between differing planes determined by the position of the presser-foot, substantially as described.

38. In a paper-feeding machine, the combination with a gravity presser-foot whose position is controlled by that of the pile operated upon, of a vertically-movable frame, means independent of the frame for temporarily increasing the pressure of said foot during the feeding operation and means for reciprocating said frame between differing planes determined by the position of the presser-foot, substantially as described.

39. In a paper-feeding machine, the combination with a gravity presser-foot whose position is controlled by that of the pile operated upon, of a vertically-movable frame, a reciprocating buckler, means for transferring the weight of the buckler to the foot during the feeding operation and means for reciprocating said frame between differing planes determined by the position of the presserfoot, substantially as described.

40. In a paper-feeding machine, the combination with a gravity presser-foot whose position is controlled by that of the pile operated upon, of a vertically-movable frame, a reciprocating buckler, means for transferring the weight of the buckler and frame to the presser-foot during the feeding operation and means for reciprocating said frame between differingplanes determined by the position of the presser-foot, substantially as described.

41. In a paper-feeding machine, the combination with a gravity presser-foot Whose position is controlled by that of the pile operated upon, and a reciprocating buckler, of a vertically-movable frame, a vibrating lever carried by said frame and connected with, so as to operate, said buckler, means for vibrating said lever and means for reciprocating said frame between differing planes determined by the position of the presser-foot, substantially as described.

42. In a paper-feeding machine, the combination with a gravity presser-foot whose position is controlled'by that of the pile operated upon, of a vertically-movable frame, means for reciprocating said frame between differing planes determined by the position of the presser-foot and a reciprocating buckler carried by said frame and constituted and arranged to rest upon the pile of paper during the buckling operation and to rest upon the presser-foot during the feeding operation, substantially as described.

43. In a paper-feeding machine, the combination with a gravity presser-foot whose position is controlled by that of the pile operated upon, a vertically-movable frame, means for reciprocating said frame between differing planes determined by the position of the presser-foot, a vibrating lever carried by said frame, an arm-lever connected with said vibrating lever, a buckler carried by said armlever and means foriinparting apivotal movement to said lever, substantially as described.

44. In a paper-feeding machine, the combination with the feeding devices and a reciprocating buckler, of a pawl-and-stop mechanism located between the buckler and its actuating-cam to stop the reciprocation of said buckler whenever the feeding devices are tripped or fail to operate, substantially as described.

45. In a paper-feeding machine, the combination with the feeding devices and a reciprocating buckler, of a rock-shaft adapted to be operated intermittently with the feeding devices, a cam and means for operating the same to move the buckler forward and a pawl carried by said rock-shaft adapted to prevent the forward movement of the buckler when the feeding devices are tripped or fail to operate, substantially as described.

46. In apaper-feeding machine, the combination withthe feeding devices, a reciprocating buckler, a rock-shaft, and connections between said rock-shaft and buckler for communi eating movement to the buckler from devices fail to rock said shaft to lift the pawl said shaft and comprising a rod, of a projecout of the path of movement of the projection on said rod, a rock-shaft adapted to be tion, substantially as described.

operated by the feeding devices and a pawl VVENTWORTH G. TREVETTE. 5 carried by said rook-shaft and adapted to en- Witnesses:

gage said projection to prevent the buekler WM. 0. BELT,

from moving forward whenever the feeding LUCIUS W. WINCHESTER. 

